Generate dependent IDL headers before parsing yarp.i

[PeterBowman]

PR #3269 requires that the yarp/dev/LLM_Message.h header is present at the time yarp.i is parsed. If YARP bindings are built along with the core libraries, it can cause a "Error: Unable to find 'yarp/dev/LLM_Message.h'" SWIG compiler error due to this header being generated by the IDL parser afterwards.

To reproduce this, create a build tree from scratch and configure YARP bindings, e.g.:

cmake .. -DYARP_COMPILE_BINDINGS=ON -DCREATE_PYTHON=ON

The following target fails with the aforementioned error:

make yarp_python_swig_compilation

Using ${SWIG_YARP_LIBRARIES} instead of an explicit YARP::YARP_dev for maintainability, although this is the only YARP component needed.

[update-docs]

Thanks for opening this pull request! The maintainers of this repository would appreciate it if you would update the release notes by adding a file in doc/release/<target_branch>, based on your changes.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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